US3435182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding method
Assignee: Theodor Wuppermann GmbH
•
Filing: 1966-08-18
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Granted: 1969-03-25
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Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Eberhard Rietsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:33
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/50; B; B23; B23K; B23K11/00; B23K11/04; B23K11/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF IMPROVING THE WELDING SEAM STRUCTURE OF WORKPIECES WHICH HAVE BEEN ELECTRICALLY FLASH BUTT WELDED, WHICH COMPRISES SUBJECTING THE WELDING SEAM, AFTER WELDING, TO AN UPSETTING PRESSURE OF A MAGNITUDE SUFFICIENT TO CAUSE PLASTIC DEFORMATION OF FLOWING OF THE WELDING SEAM AT A TEMPERATURE WHICH IS AT LEAST EQUAL TO THE TEMPERATURE OF THE TRANSFORMATION POINT OF THE WELDING
Claim 2
Independent Claim
61 words
A METHOD OF IMPROVING THE WELDING SEAM STRUCTURE OF WORKPIECES WHICH HAVE BEEN ELECTRICALLY FLASH BUTT WELDED, WHICH COMPRISES SUBJECTING THE WELDING SEAM, AFTER WELDING, TO AN UPSETTING PRESSURE OF A MAGNITUDE SUFFICIENT TO CAUSE PLASTIC DEFORMATION OF FLOWING OF THE WELDING SEAM AT A TEMPERATURE WHICH IS AT LEAST EQUAL TO THE TEMPERATURE OF THE TRANSFORMATION POINT OF THE WELDING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |